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321 Stainless Steel Shims are manufactured from titanium-stabilized austenitic stainless steel, offering excellent resistance to intergranular corrosion. The addition of titanium prevents carbide precipitation during welding, making these shims ideal for high-temperature applications. They maintain exceptional strength and stability even when exposed to heat cycles. These shims are widely used in aerospace, petrochemical, and thermal processing industries. Their superior mechanical properties ensure long-lasting performance in demanding conditions.
The main advantage of 321 Stainless Steel Shims lies in their excellent oxidation resistance up to 870°C. They perform well in continuous service environments where exposure to heat and corrosive gases is common. These shims maintain their toughness and ductility even after prolonged use. Their strong resistance to scaling makes them suitable for exhaust manifolds, heat exchangers, and furnace parts. They offer both durability and reliability under extreme conditions.
321 Stainless Steel Shims provide superior resistance to corrosion in acidic and neutral environments. They are especially beneficial in applications that involve exposure to organic acids or sulfur compounds. The presence of titanium enhances their structural stability, preventing weld decay and sensitization. These shims are easy to fabricate, form, and weld without compromising their corrosion resistance. Their smooth and clean surface finish also ensures minimal contamination risk.
Another benefit of 321 Stainless Steel Shims is their excellent formability and machinability. They can be easily shaped, cut, or punched into various sizes and thicknesses to suit specific engineering requirements. Their high tensile strength ensures accurate and stable alignment in assemblies. These shims are commonly used for leveling, spacing, and vibration reduction in heavy-duty machinery. Their robust design ensures reliability under pressure and temperature variations.
321 Stainless Steel Shims are non-magnetic in the annealed condition, which makes them suitable for applications requiring minimal magnetic interference. They retain their mechanical properties in both low and elevated temperatures, offering versatility in multiple industries. The titanium content provides added protection against chloride-induced corrosion. These shims are suitable for marine, power generation, and chemical equipment applications. Their consistent performance ensures safety and durability in operation.
Weldability is another strong feature of 321 Stainless Steel Shims, as they can be welded using standard techniques without post-weld annealing. This makes them convenient for fabrication in high-heat or corrosive environments. Their strength-to-weight ratio ensures efficiency and ease of handling. These shims are a reliable solution for critical assemblies that demand precision and corrosion resistance. Their long service life reduces maintenance costs and downtime.
321 Stainless Steel Shims are manufactured to meet strict quality and dimensional standards for industrial use. They are available in various finishes like 2B, BA, and mirror polish for aesthetic and functional needs. Their combination of heat resistance, corrosion protection, and mechanical stability makes them a preferred choice across multiple sectors. They are used extensively in exhaust systems, heat treatment equipment, and turbine components. Overall, these shims provide an ideal balance of strength, durability, and temperature resistance.
Specification Table
| Specification | Details |
|---|---|
| Material | 321 Stainless Steel |
| Type | Shims / Spacers |
| Standard | ASTM A240 / A480 |
| Thickness | 0.05 mm – 10 mm (custom available) |
| Width | 5 mm – 1000 mm (custom available) |
| Length | 5 mm – 3000 mm (custom available) |
| Surface Finish | Polished / Mill Finish |
| Density | 8.0 g/cm³ |
| Max Service Temperature | 870°C (continuous), 925°C (intermittent) |
| Corrosion Resistance | Excellent in oxidizing and mild corrosive environments |
Chemical Composition (Typical ranges for SSGrade)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Titanium (Ti) | ≥ 5 × C (min 0.2) |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength (Ultimate) | 515 – 760 | MPa |
| Yield Strength (0.2% Offset) | 205 – 310 | MPa |
| Elongation (in 50 mm) | 40 – 50 | % |
| Hardness (Brinell) | ≤ 201 | HB |
| Modulus of Elasticity | 193 | GPa |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Density | 8.0 | g/cm³ |
| Maximum Service Temperature | 870 (continuous), 925 (intermittent) | °C |
Equivalent Grades
| Standard | Grade Equivalent |
|---|---|
| AISI / ASTM | 321 |
| EN / DIN | 1.4541 / X6CrNiTi18-10 |
| JIS | SUH 321 / SUS 321 |
| GB / China | 0Cr18Ni9Ti |
| UNS | S32100 |
| BS | 321S31 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Thickness (mm) | Width (mm) | Length (mm) | Weight (kg/m²) |
|---|---|---|---|
| 0.05 | 100 | 1000 | 0.40 |
| 0.1 | 100 | 1000 | 0.80 |
| 0.2 | 100 | 1000 | 1.60 |
| 0.5 | 100 | 1000 | 4.00 |
| 1.0 | 100 | 1000 | 8.00 |
| 2.0 | 100 | 1000 | 16.00 |
| 3.0 | 100 | 1000 | 24.00 |
| 5.0 | 100 | 1000 | 40.00 |
| 10.0 | 100 | 1000 | 80.00 |
Types Of 321 Stainless Steel Shimss and Tubes
Stainless Steel Shims
Monel 400 K400 shims
Hastelloy shims
Inconel 600 shims
Super Duplex shims
Duplex shims
Monel K500 shims
Nickel Alloy shims
Frequently Asked Questions (FAQ)
What is 321 Stainless Steel Shim?
321 Stainless Steel Shims are thin, flat pieces made of 321 stainless steel, used for precise spacing, alignment, and support in machinery and structural applications. They are known for their corrosion resistance and high-temperature strength.
What are the key features of 321 Stainless Steel?
Key features include excellent corrosion resistance, high-temperature stability, good mechanical strength, and titanium stabilization to prevent carbide precipitation during welding.
What industries use 321 Stainless Steel Shims?
They are widely used in aerospace, automotive, chemical processing, power generation, and heavy machinery where precision and durability are critical.
What is the maximum service temperature for 321 stainless steel?
321 stainless steel can continuously withstand temperatures up to 870°C (1600°F) and intermittently up to 925°C (1700°F).
Can 321 Stainless Steel Shims be custom made?
Yes, they are available in various thicknesses, widths, lengths, and even custom shapes to meet specific engineering requirements.
Stainless Steel Shims Supplier
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